validate phone numbers regex code example

Example 1: phone number regex

^[+]*[(]{0,1}[0-9]{1,4}[)]{0,1}[-\s\./0-9]*$

Example 2: valid phone number regex with country code

((00)?(\+)?\d{1,3})[-\s]+(\d{1,3})[-\s]+(\d{4,10})

Example 3: general phone number regex

^(?:(?:\+?1\s*(?:[.-]\s*)?)?(?:\(\s*([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9])\s*\)|([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9]))\s*(?:[.-]\s*)?)?([2-9]1[02-9]|[2-9][02-9]1|[2-9][02-9]{2})\s*(?:[.-]\s*)?([0-9]{4})(?:\s*(?:#|x\.?|ext\.?|extension)\s*(\d+))?$